/*
 * Copyright (C)  Tony Green, LitePal Framework Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.litepal.lib.tablemanager.model;

import android.text.TextUtils;

import java.util.ArrayList;
import java.util.List;

/**
 * This is a model class for tables. It stores a table name and a HashMap for
 * columns in the table.
 *
 * @author Tony Green
 * @since 1.0
 */
public class TableModel
{

	/**
	 * Table name.
	 */
	private String tableName;

	/**
	 * A list contains all column models with column name, type and constraints.
	 */
	private List<ColumnModel> columnModels = new ArrayList<ColumnModel>();

	/**
	 * Class name for the table name. This value might be null. Don't rely on it.
	 */
	private String className;

	/**
	 * Get table name.
	 *
	 * @return Name of table.
	 */
	public String getTableName()
	{
		return tableName;
	}

	/**
	 * Set table name.
	 *
	 * @param tableName Name of table.
	 */
	public void setTableName(String tableName)
	{
		this.tableName = tableName;
	}

	/**
	 * Get class name.
	 *
	 * @return Return the class name or null.
	 */
	public String getClassName()
	{
		return className;
	}

	/**
	 * Set class name.
	 *
	 * @param className The class name.
	 */
	public void setClassName(String className)
	{
		this.className = className;
	}

	/**
	 * Add a column model into the table model.
	 *
	 * @param columnModel A column model contains name, type and constraints.
	 */
	public void addColumnModel(ColumnModel columnModel)
	{
		columnModels.add(columnModel);
	}

	/**
	 * Find all the column models of the current table model.
	 *
	 * @return A list contains all column models.
	 */
	public List<ColumnModel> getColumnModels()
	{
		return columnModels;
	}

	/**
	 * Find the ColumnModel which can map the column name passed in.
	 *
	 * @param columnName Name of column.
	 * @return A ColumnModel which can map the column name passed in. Or null.
	 */
	public ColumnModel getColumnModelByName(String columnName)
	{
		for (ColumnModel columnModel : columnModels)
		{
			if (columnModel.getColumnName().equalsIgnoreCase(columnName))
			{
				return columnModel;
			}
		}
		return null;
	}

	/**
	 * Remove a column model by the specified column name.
	 *
	 * @param columnName Name of the column to remove.
	 */
	public void removeColumnModelByName(String columnName)
	{
		if (TextUtils.isEmpty(columnName))
		{
			return;
		}
		int indexToRemove = -1;
		for (int i = 0; i < columnModels.size(); i++)
		{
			ColumnModel columnModel = columnModels.get(i);
			if (columnName.equalsIgnoreCase(columnModel.getColumnName()))
			{
				indexToRemove = i;
				break;
			}
		}
		if (indexToRemove != -1)
		{
			columnModels.remove(indexToRemove);
		}
	}

	/**
	 * Judge the table model has such a column or not.
	 *
	 * @param columnName The name of column to check.
	 * @return True if matches a column in the table model. False otherwise.
	 */
	public boolean containsColumn(String columnName)
	{
		for (int i = 0; i < columnModels.size(); i++)
		{
			ColumnModel columnModel = columnModels.get(i);
			if (columnName.equalsIgnoreCase(columnModel.getColumnName()))
			{
				return true;
			}
		}
		return false;
	}

}
